Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
use Friendica\App;
use Friendica\Content\Text\BBCode;
use Friendica\Content\Widget;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\Renderer;
use Friendica\Core\Session;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\Contact;
use Friendica\Model\Item;
use Friendica\Model\Post;
use Friendica\Model\User;
use Friendica\Module\ActivityPub\Objects;
use Friendica\Network\HTTPException;
use Friendica\Protocol\ActivityPub;
use Friendica\Protocol\DFRN;
function display_init(App $a)
{
if (ActivityPub::isRequest()) {
Objects::rawContent(['guid' => DI::args()->getArgv()[1] ?? null]);
}
if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
return;
}
$nick = ((DI::args()->getArgc() > 1) ? DI::args()->getArgv()[1] : '');
$item = null;
$item_user = local_user();
$fields = ['uri-id', 'parent-uri-id', 'author-id', 'author-link', 'body', 'uid', 'guid', 'gravity'];
// If there is only one parameter, then check if this parameter could be a guid
if (DI::args()->getArgc() == 2) {
$nick = '';
// Does the local user have this item?
if (local_user()) {
$item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'uid' => local_user()]);
if (DBA::isResult($item)) {
$nick = $a->getLoggedInUserNickname();
}
}
// Is this item private but could be visible to the remove visitor?
if (!DBA::isResult($item) && remote_user()) {
$item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
if (DBA::isResult($item)) {
if (!Contact::isFollower(remote_user(), $item['uid'])) {
$item = null;
} else {
$item_user = $item['uid'];
}
}
}
// Is it an item with uid=0?
if (!DBA::isResult($item)) {
$item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
}
} elseif (DI::args()->getArgc() >= 3 && $nick == 'feed-item') {
$uri_id = DI::args()->getArgv()[2];
if (substr($uri_id, -5) == '.atom') {
$uri_id = substr($uri_id, 0, -5);
}
$item = Post::selectFirstForUser(local_user(), $fields, ['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
}
if (!DBA::isResult($item)) {
return;
}
if (DI::args()->getArgc() >= 3 && $nick == 'feed-item') {
displayShowFeed($item['uri-id'], $item['uid'], DI::args()->getArgc() > 3 && DI::args()->getArgv()[3] == 'conversation.atom');
}
if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
Logger::log('Directly serving XML for uri-id '.$item['uri-id'], Logger::DEBUG);
displayShowFeed($item['uri-id'], $item['uid'], false);
}
if ($item['gravity'] != GRAVITY_PARENT) {
$parent = Post::selectFirstForUser($item_user, $fields, ['uid' => $item['uid'], 'uri-id' => $item['parent-uri-id']]);
$item = $parent ?: $item;
}
$profiledata = display_fetchauthor($item);
DI::page()['aside'] = Widget\VCard::getHTML($profiledata);
}
function display_fetchauthor($item)
{
$profiledata = Contact::getByURLForUser($item['author-link'], local_user());
// Check for a repeated message
$shared = Item::getShareArray($item);
if (!empty($shared) && empty($shared['comment'])) {
$profiledata = [
'uid' => -1,
'id' => -1,
'nickname' => '',
'name' => '',
'picdate' => '',
'photo' => '',
'url' => '',
'network' => '',
];
if (!empty($shared['author'])) {
$profiledata['name'] = $shared['author'];
}
if (!empty($shared['profile'])) {
$profiledata['url'] = $shared['profile'];
}
if (!empty($shared['avatar'])) {
$profiledata['photo'] = $shared['avatar'];
}
$profiledata['nickname'] = $profiledata['name'];
$profiledata['network'] = Protocol::matchByProfileUrl($profiledata['url']);
$profiledata['address'] = '';
$profiledata['about'] = '';
$profiledata = Contact::getByURLForUser($profiledata['url'], local_user()) ?: $profiledata;
}
if (!empty($profiledata['photo'])) {
$profiledata['photo'] = DI::baseUrl()->remove($profiledata['photo']);
}
return $profiledata;
}
function display_content(App $a, $update = false, $update_uid = 0)
{
if (DI::config()->get('system','block_public') && !Session::isAuthenticated()) {
throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
}
$o = '';
$item = null;
$force = (bool)($_REQUEST['force'] ?? false);
if ($update) {
$uri_id = $_REQUEST['uri_id'];
$item = Post::selectFirst(['uid', 'parent-uri-id'], ['uri-id' => $uri_id, 'uid' => [0, $update_uid]]);
if (!empty($item)) {
if ($item['uid'] != 0) {
$a->setProfileOwner($item['uid']);
} else {
$a->setProfileOwner($update_uid);
}
$parent_uri_id = $item['parent-uri-id'];
}
} else {
$uri_id = ((DI::args()->getArgc() > 2) ? DI::args()->getArgv()[2] : 0);
$parent_uri_id = $uri_id;
if (DI::args()->getArgc() == 2) {
$fields = ['uri-id', 'parent-uri-id', 'uid'];
if (local_user()) {
$condition = ['guid' => DI::args()->getArgv()[1], 'uid' => local_user()];
$item = Post::selectFirstForUser(local_user(), $fields, $condition);
if (DBA::isResult($item)) {
$uri_id = $item['uri-id'];
$parent_uri_id = $item['parent-uri-id'];
}
}
if (($parent_uri_id == 0) && remote_user()) {
$item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
$uri_id = $item['uri-id'];
$parent_uri_id = $item['parent-uri-id'];
}
}
if ($parent_uri_id == 0) {
$condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => DI::args()->getArgv()[1], 'uid' => 0];
$item = Post::selectFirstForUser(local_user(), $fields, $condition);
if (DBA::isResult($item)) {
$uri_id = $item['uri-id'];
$parent_uri_id = $item['parent-uri-id'];
}
}
}
}
if (empty($item)) {
throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
}
if (!DI::pConfig()->get(local_user(), 'system', 'detailed_notif')) {
DBA::update('notification', ['seen' => true], ['parent-uri-id' => $item['parent-uri-id'], 'uid' => local_user()]);
DBA::update('notify', ['seen' => true], ['parent-uri-id' => $item['parent-uri-id'], 'uid' => local_user()]);
}
// We are displaying an "alternate" link if that post was public. See issue 2864
$is_public = Post::exists(['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]);
if ($is_public) {
// For the atom feed the nickname doesn't matter at all, we only need the item id.
$alternate = DI::baseUrl().'/display/feed-item/'.$uri_id.'.atom';
$conversation = DI::baseUrl().'/display/feed-item/' . $parent_uri_id . '/conversation.atom';
} else {
$alternate = '';
$conversation = '';
}
DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
['$alternate' => $alternate,
'$conversation' => $conversation]);
$is_remote_contact = false;
$item_uid = local_user();
$page_uid = 0;
$parent = null;
if (!empty($parent_uri_id)) {
$parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]);
}
if (DBA::isResult($parent)) {
$page_uid = $page_uid ?? 0 ?: $parent['uid'];
$is_remote_contact = Session::getRemoteContactID($page_uid);
if ($is_remote_contact) {
$item_uid = $parent['uid'];
}
} else {
$page_uid = $item['uid'];
}
if (!empty($page_uid) && ($page_uid != local_user())) {
$page_user = User::getById($page_uid);
}
$is_owner = local_user() && (in_array($page_uid, [local_user(), 0]));
if (!empty($page_user['hidewall']) && !$is_owner && !$is_remote_contact) {
throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
}
// We need the editor here to be able to reshare an item.
if ($is_owner && !$update) {
$o .= status_editor($a, [], 0, true);
}
$sql_extra = Item::getPermissionsSQLByUserId($page_uid);
if (local_user() && (local_user() == $page_uid)) {
$condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
$unseen = Post::exists($condition);
} else {
$unseen = false;
}
if ($update && !$unseen && !$force) {
return '';
}
$condition = ["`uri-id` = ? AND `uid` IN (0, ?) " . $sql_extra, $uri_id, $item_uid];
$fields = ['parent-uri-id', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
$item = Post::selectFirstForUser($page_uid, $fields, $condition);
if (!DBA::isResult($item)) {
throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
}
$item['uri-id'] = $item['parent-uri-id'];
if ($unseen) {
$condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
Item::update(['unseen' => false], $condition);
}
if (!$update && local_user()) {
$o .= "<script> var netargs = '?uri_id=" . $item['uri-id'] . "'; </script>";
}
$o .= conversation($a, [$item], 'display', $update_uid, false, 'commented', $item_uid);
// Preparing the meta header
$description = trim(BBCode::toPlaintext($item['body']));
$title = trim(BBCode::toPlaintext($item['title']));
$author_name = $item['author-name'];
$image = DI::baseUrl()->remove($item['author-avatar']);
if ($title == '') {
$title = $author_name;
}
// Limit the description to 160 characters
if (strlen($description) > 160) {
$description = substr($description, 0, 157) . '...';
}
$description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
$author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
$page = DI::page();
if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
$page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
}
DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
$page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
$page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
$page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
// Schema.org microdata
$page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
$page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
$page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
$page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
// Twitter cards
$page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
$page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
$page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
$page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
$page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
// Dublin Core
$page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
$page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
// Open Graph
$page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
$page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
$page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
$page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
$page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
$page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
// article:tag
return $o;
}
function displayShowFeed(int $uri_id, int $uid, bool $conversation)
{
$xml = DFRN::itemFeed($uri_id, $uid, $conversation);
if ($xml == '') {
throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
}
header("Content-type: application/atom+xml");
echo $xml;
exit();
}